diff --git a/moderncv.cls b/moderncv.cls
index b14fc53..d16fc89 100644
--- a/moderncv.cls
+++ b/moderncv.cls
@@ -93,6 +93,7 @@
     \xetexorluatextrue
   \else
     \xetexorluatexfalse
+    \ClassWarningNoLine{moderncv}{"academicons requires xetex/luatex to work. Not all social icons might work properly."}
   \fi
 \fi